This Is How Chill Girls Dress for a Party

When it comes to celebrities with an effortless sense of style, Sienna Miller takes the cake. The quintessential British cool girl never ceases to impress us with her ability to take something fancy and make it wearable and modern sans fuss. Case in point: Miller attended an exhibition opening in New York this week in a fancy party mini dress and metallic heels. Pretty standard party attire, right? What took it to cool chill-girl territory was the third piece she wore: a maxi-length military coat. That cool on-trend addition, along with her perfectly undone locks, took her outfit from basic to special and proved that a duster coat is the perfect chill partner for a metallic mini dress and heels. Not only that, it makes a party dress infinitely more suitable for chilly temperatures. 

A duster coat is a piece that It girls have been throwing on over everything from leggings to denim cutoffs as of late, so it's only natural that this easy piece plays into chill girl's party looks, too. And given that it's the holiday season, you could probably use a new party outfit idea or two, so take note of this one. 

Keep scrolling to see Sienna Miller's chill party outfit and shop the look for yourself!

every-chill-girl-needs-this-party-outfit-1983864-1479504142

(Image credit: Splash News )

On Sienna Miller: Burberry coat and Cape-Sleeved Macramé Dress ($4895).

every-chill-girl-needs-this-party-outfit-1983902-1479505415

Check out Sienna Miller's holiday dressing rules here.

Opening Image: Splash News

Allyson Payer
Senior Editor

Allyson is a senior editor for Who What Wear. She joined the company in 2014 as co-founder Katherine Power's executive assistant and over the years has written hundreds of stories for Who What Wear. Prior to her career in fashion, Allyson worked in the entertainment industry at companies such as Sony Pictures Television. Allyson is now based in Raleigh, North Carolina, and is originally from Baton Rouge, Louisiana. She holds a BFA in theater. Her path to fashion may not have been linear, but based on the number of fashion magazines she collected as a child and young adult, it was meant to be.